Abrasion wear resistant coated substrate product
CA 2090109 C · Owner: Finke, Steven James · Inventors: Knapp, Bradley J.; Kimock, Fred M,.; Finke, Steven James
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The coated substrate product finds particular application in eyeglass and sunglass lenses, architectural glass, analytical instrument windows, automotive windshields and laser bar code scanners for use in retail stores and supermarkets. The product comprises a substantially optically transparent substrate(1) a chemically , vapor deposited first interlayer (2) bonded to the substrate and a chemically vapor deposited outer layer of substantially optically transparent diamond-like carbon (3) bonded to the interlayer and away from the substrate.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed September 20, 1991 and granted May 29, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 20, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 20, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.